25, 49, 81, 225
If by 'perfect number' you mean 'perfect SQUARE', then yes. 49 is an odd number and a perfect square.
The square of any odd integer is an odd square number. For example, 3^2 = 9.
1 is odd and a perfect square.
-1 is an odd number but not a perfect square.
A perfect square has an odd number of factors.
An odd number.
if a number has an odd number of factors it would be a perfect square
if a number has an odd number of factors it would be a perfect square
No, perfect squares are not only even numbers. While the square of an even number is always even, the square of an odd number is always odd. Therefore, perfect squares can be both even and odd, depending on whether the original number being squared is even or odd. For example, (4) (from (2^2)) is even, while (9) (from (3^2)) is odd.
A perfect square has an odd number of factors. Factors of numbers always come in pairs -- except for perfect squares. Since the square root of a perfect square is listed only once on the list of factors, it results in a list with an odd number of factors.
A perfect square.
A square number or a perfect square.